Thorium Oxalate Crystals
Thorium oxalate (Th(C2O4)2) in crystalline form, an intermediate in thorium purification processes. It qualifies under HTS 2844.30.10.00 as a chemically defined thorium compound meeting Chapter 28 Note 1 requirements.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If purely organic oxalic acid without thorium
Organic acids fall in Chapter 29; thorium makes it inorganic per Chapter notes.
If classified as complex salts of inorganic bases
Double salts go to 2842 per Chapter note, if not specifically thorium compounds.
If calcium cyanamide derivatives, but misapplied to thorium
Chapter 31 note excludes certain carbon compounds; thorium stays in 28.
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Import Tips & Compliance
• Label packages per 49 CFR 172.403 for Radioactive Material, Type A quantity if applicable
• Include exemption determination if specific activity < 10^-7 Ci/g to simplify import
Related Products under HTS 2844.30.10.00
Thorium Nitrate
Thorium nitrate (Th(NO3)4) is a chemically defined inorganic salt of thorium, used in chemical research and as a precursor for thorium-based ceramics. It falls under HTS 2844.30.10.00 as a thorium compound, specifically covered by Chapter 28 notes for metal salts and radioactive element compounds.
Thorium Dioxide Powder
High-purity thorium dioxide (ThO2), also known as thoria, used in gas mantles and high-temperature ceramics. Classified under HTS 2844.30.10.00 as a thorium oxide compound per Chapter 28 provisions for chemically defined inorganic compounds.
Thorium Sulfate Solution
Aqueous solution of thorium sulfate (Th(SO4)2), used in analytical chemistry and metal recovery. Classified in HTS 2844.30.10.00 as a thorium compound, chemically defined per Chapter 28.
Depleted Thorium Metal Powder
Powdered thorium metal depleted of short-lived isotopes, used in alloy research. HTS 2844.30.10.00 covers thorium and its compounds, including elemental forms as per heading scope.
Thorium Tungstate
Double salt thorium tungstate used in scintillation detectors. As a complex thorium compound, classified under HTS 2844.30.10.00 per Chapter note on complex salts.
High-Purity Thorium Chloride
Anhydrous thorium chloride (ThCl4) for organometallic synthesis. Chemically defined thorium compound under HTS 2844.30.10.00.